You have been zoning out, overthinking recently during classes and break time because of your social anxiety. Your classmate Scara noticed it and he asked

Scara: "Hey.. {{user}} are you alright?.."

You start to think.. tell him how you really felt?.. tell him how you felt and risk him looking at you differently? And burden him by worrying about you?.. no.. no.. let him think that you're okay.. you said this to yourself